JPH028316Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a tuning device for guitars and other stringed instruments.

(Prior art) Devices have been known in which a locking member at the end of a string is advanced and retracted using a tuning bolt, but the conventional device has a structure in which the bolt is advanced and retracted almost linearly in the direction of string tension. In addition to the tension being applied to threaded parts such as straight bolts, which poses durability problems, the adjustment progresses uniformly, so it is impossible to distinguish between fine adjustment and coarser adjustment, even when the adjustment is far from the standard tone. It can only be adjusted as fast as it approaches, and the tuning bolt must always be placed behind the string.

(Technical Issue) Therefore, the present invention aims to provide a member that bears the tension of the string,
By dividing the string into the parts that perform tuning and connecting the former with the parts that move during the tuning operation, it is possible to adjust the tension of the string with a type of boosting mechanism, and it is easy to adjust and has good durability. Further, the present invention provides a tuning device for a stringed instrument that does not restrict the shape of the main body of the stringed instrument.

(Technical Means) The present invention which achieves the above object has a slide member 2 that bears the tension of the string 1 attached to the main body 3 of the device so as to be movable back and forth, and a hinge member 4 having one end pivotally supported on the member 2 and the other end of the hinge member 4 being anchored. A tuning bolt 6 mounted on the main body 3 is screwed into the anchor 5, and the anchor 5 is attached to a guide member 7 for restricting rotation.
This is a tuning device for a stringed instrument, which is engaged with a stringed instrument.

(Function of the invention) Anchor 5 is released by operating tuning bolt 6.
moves on the bolt 6, and as the hinge member 4 opens and closes around one end, it pushes and pulls the slide member 2 depending on the degree of opening and closing. According to the embodiment, when the anchor 5 is raised from the state shown in FIG. 1, the slide member 2 moves backward, and when it is lowered, it moves forward. The amount of movement is relatively the same as the amount of movement L when the hinge member 4 is moved in a circular motion and the tip Q is projected onto a straight line P passing through the center O (see Fig. 5). 6 is tilted, so it increases slightly. In addition, although the slide member 2, hinge member 4, and anchor 5 are added to the state diagram schematically showing the operation of the device of the present invention in FIG. It can be seen that, conversely, as the distance increases, coarser adjustment becomes possible.

(Embodiment) To explain the following with reference to the illustrated embodiment, the slide member 2 that bears the tension of the string 1 consists of a pair of slide arms 8, 8 and a string ball 1 fixed to the front end thereof by a shaft 9.
A roller 12 is pivotally supported by a shaft 13 together with a hinge member 4 on both sides of the rear end. 9a, 11a, 13a, 13b are each axis 9,
13 is a small hole through which the string 13 passes, 11b is a passage groove for the string 1, and 11c is a hole for holding the string ball 10. The slide members 2 are arranged in parallel in a housing recess 14 formed on the lower surface of the device main body 3, and are movable back and forth on an upper plate 15a of a guide plate 15 that closes the recess 14. Third
In the figure, 16 is a rectangular hole provided in the guide plate 15 through which one end of the hinge member 4 passes, and 17 is a circular hole through which the tuning bolt 6 is passed. The guide plate 15 is fixed to the main body 3 with set screws 18. 18a indicates a screw hole.

The hinge member 4 is pivotally supported by the anchor 5 by the shaft 19 at the other end of the hinge member 4, and the tuning bolt 6 is screwed into the female threaded hole 20 passing through the anchor 5.
Each anchor 5 has its front surface in contact with the guide member 7 to restrict its rotation, and can be moved up and down by operating the tuning bolt 6. 19a,1
9b indicates a through hole of the shaft 19. The guide member 7 of the embodiment utilizes the inner surface of the front plate 15b of the guide member 15. Since the tuning bolt 6 is inclined, the guide member 7 is also formed parallel to the axial direction.

In each figure, 21 is a knob attached to the operating end of the tuning bolt 6, 22 is a through hole formed in the main body 3 for passing the tuning bolt 6, 23 is a screw for attaching the device main body 3 to the stringed instrument S, and 23a is a That hole,
Reference numeral 24 indicates a housing recess of the device main body 3.

(Effects of the invention) Since the present invention is configured as described above, it exhibits the following effects.

(1) The tuning torque gradually decreases as the angle formed between the slide member 2 and the hinge member 4 becomes smaller, and the amount of movement of the slide member 2 with respect to the amount of operation of the tuning bolt 6 changes in the same way. In this case, the loosened string 1 is quickly tightened, and when it is almost finished, it becomes finely tuned, so it is very easy to make adjustments.

(2) The operating knob of the tuning bolt 6 can be placed on the top surface of the tailpiece instead of at the rear, so operability is good and there are no restrictions on the body (main body of the stringed instrument).

(3) The load applied to the threaded portions of the tuning bolt 6 and the anchor 5 is small, and durability can be improved.

(4) The load is applied to the slide member 2, the hinge member 4,
Since it is distributed between the anchor member 5 and the tuning bolt 6, it is difficult for each part to be loose, or unnecessarily high precision is not required for processing.

[Brief explanation of the drawing]

The drawings show an embodiment of the tuning device for a stringed instrument according to the present invention, in which Fig. 1 is a sectional view, Fig. 2 is a partially cutaway bottom view, Fig. 3 is an exploded perspective view of the main part, and Fig. 4 is an overall view. The perspective view and FIG. 5 are operation state diagrams for explaining the operation and effects of the present device. 1...String, 2...Slide member, 3...Device main body, 4...Hinge member, 5...Anchor, 6...
Tuning bolt, 7... Guide member.

Claims (1)

[Scope of utility model registration request] A slide member 2 that bears the tension of the string 1 is attached to the main body 3 of the device so as to be movable back and forth, one end of which is pivotally supported on the member 2, and the other end of a hinge member 4 is pivotally supported on an anchor 5, which is attached to the main body 3. Tuning bolt 6
is screwed together with an anchor 5, and the anchor 5 is engaged with a rotation regulating guide member 7.